CoorsTek ADS-12 Min. 99.5% Al 2 O 3

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CoorsTek ADS-12 Min. 99.5% Al₂O₃
Categories:	Ceramic; Oxide; Aluminum Oxide
Material Notes:	Information provided by CoorsTek.
Key Words:	Al2O3, alumina
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Physical Properties	Original Value	Comments

Density	3.90 g/cc	ASTM-C20
Grain Size	8.0 µm	ASTM-E112
	1.0 - 40 µm	ASTM-E112

Mechanical Properties	Original Value	Comments
Hardness, Vickers	16 @Load 1.00 kg	ASTM-C1327
	17 @Load 0.500 kg	ASTM-C1327
Modulus of Elasticity	380 GPa	ASTM-C848
Flexural Strength	300 MPa	4-Point; ASTM-C1161
	375 MPa	3-Point; ASTM-C1161
Poissons Ratio	0.22	ASTM-C848
Fracture Toughness	4.00 - 5.00 MPa-m½	K_IC; KNOOP 1000 gm

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+7 ohm-cm @Temperature 1000 °C	ASTM-D1829
	2.00e+9 ohm-cm @Temperature 600 °C	ASTM-D1829
	2.00e+10 ohm-cm @Temperature 500 °C	ASTM-D1829
	5.00e+12 ohm-cm @Temperature 300 °C	ASTM-D1829
	>= 1.00e+15 ohm-cm @Temperature 25.0 °C	ASTM-D1829
Dielectric Constant	9.9 @Frequency 1e+6 Hz	ASTM-D150
	9.9 @Frequency 5.00e+9 Hz	TE₀₁₁ Resonant Mode
Dielectric Strength	400 V/mil @Thickness 1.00 mm	ASTM-D116
Dissipation Factor	0.00030 @Frequency 1e+6 Hz	ASTM-D150
	0.00050 @Frequency 5.00e+9 Hz	TE₀₁₁ Resonant Mode

Thermal Properties	Original Value	Comments
CTE, linear	7.10 µm/m-°C @Temperature 400 °C	ASTM-C372
	8.00 µm/m-°C @Temperature 800 °C	ASTM-C372
	8.20 µm/m-°C @Temperature 1000 °C	ASTM-C372
Specific Heat Capacity	0.800 J/g-°C	ASTM-E1269
Thermal Conductivity	30.0 W/m-K	ASTM-C408

Component Elements Properties	Original Value	Comments
Al2O3	>= 99.5 %
Iron, Fe	<= 0.0050 %	in Sintered Material per Glow Discharge Mass Spec
Magnesium, Mg	<= 0.20 %	in Sintered Material per Glow Discharge Mass Spec
Other, total	<= 0.30 %	in Sintered Material per Glow Discharge Mass Spec
Silicon, Si	<= 0.0050 %	in Sintered Material per Glow Discharge Mass Spec
Sodium, Na	<= 0.075 %	in Sintered Material per Glow Discharge Mass Spec

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CCOOR817 / 254565

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